Answer:
Identifying elements in astronomical objects using their spectra. Measuring the spectrum of light from a star can tell astronomers what the star is made up of. Since each element emits or absorbs light only at a particular wavelength astronomers can identify what element are in the stars from the lines in their spectra.
Answer: During photosynthesis, green plants uses light energy from sunlight to convert carbon dioxide and water to glucose and water. Light energy is converted to chemical energy during photosynthesis.
Explanation:
Photosynthesis is the process by which green plants uses light energy from sunlight to produce carbohydrates by converting carbon dioxide and water to carbohydrates and oxygen.
